myosin

/ˈmaɪ.oʊsɪn/

//ˈmaɪ.oʊsɪn// noun

"myosin" is a 6-letter English headword indexed on PlainSpell.

The verdict

“myosin” is uncommon English (frequency #61,656 among 4,057 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#61,656
frequency rank, English
4,057
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of a large family of motor proteins found in eukaryotic tissues, allowing mobility in muscles.

Corpus desk

Index EN-myosin · myosin · English

myosin · rank #61,656 · 0 variants · 0 confusables

  • FREQ-RARE #61,656
  • LEN-LONG 6 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,057
  • PHOTO-FINISH mylar

Nearest frequency peer: mylar (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “myosin”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “myosin” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for myosin
PropertyValue
Headwordmyosin
LanguageEnglish
Part of speechNoun
IPA/ˈmaɪ.oʊsɪn/
Letters6
Frequency rank#61,656
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “myosin” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).myosinfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “mylar” (#61,655), “Nadi” (#61,657), “mura” (#61,654). Among 4,057 “M” headwords, “myosin” is #61,656. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

myosin is uncommon English at frequency #61,656 among 4,057 “M” headwords, classed as anoun, transcribed /ˈmaɪ.oʊsɪn/. Rarity is why readers land here mid-draft. 2 senses are on record.

myosin doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From myo- (“relating to muscle”), and Ancient Greek μυός (muós), genitive of μῦς (mûs, “muscle”) + -in. The correct English form is myosin, spelled M-Y-O-S-I-N.

Definition

  1. 1
    Any of a large family of motor proteins found in eukaryotic tissues, allowing mobility in muscles.
  2. 2
    An albuminous body present in dead muscle formed in the process of coagulation which takes place in rigor mortis.

Etymology

From myo- (“relating to muscle”), and Ancient Greek μυός (muós), genitive of μῦς (mûs, “muscle”) + -in.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "myosin"?
"myosin" is spelled M-Y-O-S-I-N. The IPA pronunciation is /ˈmaɪ.oʊsɪn/.
What does "myosin" mean?
As a noun, "myosin" means: Any of a large family of motor proteins found in eukaryotic tissues, allowing mobility in muscles.
How do you pronounce "myosin"?
The IPA (International Phonetic Alphabet) transcription for "myosin" is /ˈmaɪ.oʊsɪn/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "myosin"?
From myo- (“relating to muscle”), and Ancient Greek μυός (muós), genitive of μῦς (mûs, “muscle”) + -in. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "myosin", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list